Mackie High-Definition Audio Processing provides unmatched sonic accuracy and clarity. Mackie Active technology includes a precision 3-way crossover, transducer time alignment, and phase correction. Plus, patented acoustic correction algorithms harness the power of proprietary measurement tools that identify sonic anomalies that are inherent to all horn-loaded systems. Extremely complex algorithms are then applied to the HD1531 to counter these anomalies, elevating the experience of both the audience and engineer.

EAW custom-designed HD Series transducers maximize efficiency and performance when matched with the system's internal amps. The 15-inch woofer uses a neodymium magnet for reduced weight, and the 3-inch voice coil dissipates heat extremely well. The 1.75-inch compression driver and 6-inch midrange transducer are loaded into Mackie's wide-dispersion WaveFront system, which ensures optimum intelligibility for every seat in the house.

The integrated 3-band contour EQ with a sweepable mid allows the user to custom-tailor system tone for the application or correct for common room anomalies. A bypass switch provides easy implementation of a pre-set EQ.